Canopen is an open and widely used fieldbus. This article mainly introduces the various products from Schneider that support Canopen communication. Canopen Master Stations: Twido, M238, M258, M241, M251, LMC058/LMC078, M340, Premium (The number of supported slave devices varies for each master station; please refer to the manual for details.) Canopen Slave Stations: ATV312/61/71 IMC … Read more
Automation control systems mainly consist of: controllers, controlled objects, actuators, and transmitters. Controller: It can change the wiring of the main circuit or control circuit and alter the resistance values in the circuit to control the motor’s start, speed regulation, braking, and reversing main command device in a predetermined order. Controlled Object: Generally refers to … Read more
Industrial automatic control systems integrate information management and automatic control by summarizing, analyzing, and organizing various information collected by industrial control computers from sensors and local area networks, ensuring information security through access authentication. Industrial automation control is mainly divided into three parts: industrial automation systems, hardware, and software. The commonly used industrial automation control … Read more
RS485 and MODBUS communication are commonly used concepts in industrial control systems, but they are different. Below is a brief introduction. RS485 is a physical interface, simply put, it is hardware. MODBUS is an internationally standardized communication protocol used for device data exchange between different manufacturers (generally for industrial purposes); in industrial environments, data is … Read more
With the implementation of the “Industry 4.0” strategy, the development of computer technology, communication technology, and IT technology has infiltrated the industrial control field. The most significant manifestation of this is the technology of industrial fieldbus and industrial Ethernet. The widespread use of industrial fieldbus technology, especially Ethernet technology, has brought profound changes to automation … Read more
As a seasoned electrical engineer, one should be well-versed in various bus systems. Today, I have compiled relevant materials for everyone! 1. Overview 1. Introduction to IEC61158 IEC61158 is the fieldbus standard from the International Electrotechnical Commission (IEC). Currently, the IEC61158 fieldbus standard has developed a series of standards, with the latest version being IEC61158-6-20 … Read more
1. Foundation Fieldbus (FF) This was established in September 1994 by the collaboration of American Fisher-Rousemount, Yokogawa, ABB, Siemens, Invensys, and over 80 other companies to create the ISP protocol, along with Honeywell and over 150 companies in Europe to create the WorldFIP protocol. This bus has been widely used in the field of process … Read more
In the development of industry, fieldbus plays a very important role, mainly applied in fields such as petroleum, chemical, electric power, medicine, metallurgy, manufacturing, transportation, national defense, aerospace, agriculture, and buildings. Today, I will introduce several types of fieldbus such as the Modbus communication protocol, PROFIBUS, FF, and CAN bus. Origin and Development of Modbus … Read more
Profibus Bus Technology 1 What is Profibus Fieldbus? The fieldbus is a serial, digital, multipoint communication bus installed between field devices/instruments in the production process area and automatic control devices/systems in the control room. Of course, the production process includes both continuous and batch production. Profibus fieldbus is one of them. In simple terms, Profibus … Read more
PROFIBUS is an international, open, and device-independent fieldbus standard. The transmission speed of PROFIBUS can be selected within the range of 9.6kbaud to 12Mbaud, and when the bus system starts, all devices connected to the bus should be set to the same speed. It is widely used in manufacturing automation, process automation, and other fields … Read more